Add option to disable CWs

[TheInitializer]

This is an option i'm missing on every Mastodon client. I would implement it myself but I have a ton going on in terms of school right now.

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• Tusky Version: 1.7.0

• Android Version: 8.1.0

• Android Device: Nexus 4

• I searched or browsed the repo’s other issues to ensure this is not a duplicate.

[charlag]

Hi! Yeah, I know some people (mostly from Pleroma) don't want posts to be collapsed. I think it's a viable option.
Please tell us if you will start working on this and thanks for filling this in.

[adamemerson]

If you do add this option, please also make it turn off long toot collapsing.

(Or at least provide an option to turn off long-toot collapsing.)

[charlag]

Mastodon has on option "Always expand toots marked with content warnings" but it's not exposed through the API (so it's probably local). I think it's a good argument in favor of adding such a thing.

[connyduck]

There is a pull request to expose the setting via the api mastodon/mastodon#9821

[digitalcircuit]

Worthwhile noting that the preferences API has been merged, and Tusky would need to load/store the reading:expand:spoilers boolean via api/v1/preferences.

Looking through MastodonApi.java, it seems like Tusky still uses the previous way of accessing default sensitivity and privacy (api/v1/accounts/update_credentials). All of those settings could probably be migrated to the new API endpoint, too.

For reference from the merged PR, tootsuite/mastodon#10109:

{
  "posting:default:visibility": "public",
  "posting:default:sensitive": false,
  "posting:default:language": null,
  "reading:expand:media": "default",
  "reading:expand:spoilers": false
}

[connyduck]

https://mastodon.social/@Tusky/102492376435005711